UniTak3D Ender 3 V2 Y-axis Belt Tensioner Upgrade for Creality Ender 3 V2 Ender 3 Pro CR10 Mega Zero 2.0 Flashforge-Aquila AURORA-A5X 3D Printer 2040 Profile

Was impressed with the quality and strength of the construction. I was happy to find out that I didnt even have to change the length of my belts. They are far superior to the acrylic parts that came with my printer

This is very good for the price, highly recommend this product

Not really sure if I can find a better one. The only problem is that they get loose over LONG periods of time (like I have to tighten once a month of continuous use). Otherwise, its helped my prints dramatically. Just wish I could lock it in once I got the tightness correct.

A great choice for anyone who wants to replace the original Belt Stretch Straighten Tensioner on the Ender 3D printer.

This a solid unit already assembled ready to go! this took less than 10 minutes to install. Would have been faster but I took my time to get the correct tension with the knob. So easy ( Just 2 included hex screws NOT phillips yayy and 2 tension nuts) I am going right now to purchase 2 more for my other two Ender3 Pros. Thanks UniTak3D for a Great product and super fast Amazon shipping!

Crashed into the bed while its running through the ABL process ONLY when its running through the center row. All others seem to not have an issue.

Easy item, lower tension to work smoothly

It worked as intended on my Ender 3 Pro

If the carriage inside width was just smidge wider the problem I experienced could be avoided, and this thing could be hacked to use the original bearings in the Creality tensioner mechanism. For me, the pulley itself is rubbing on the tension carriage adding dragging and screeching. If the part were better designed, they could give some relief to hold the center of the bearing in place yet leave clearance for the pulley. Or the whole center part of the carriage could be made wider and some thing washers inserted to create the clearance. And this should really be using a shoulder bolt instead of a fully threaded M5 part so the bearings are riding on a shaft instead of undersized thread.

I purchased the 2040 size for my Y-Axis and 2020 for my X-Axis for my CR-10 V3. The X-Axis installed quickly and easily. The Y-Axis would not install correctly, no matter what I did. It turns out that the bolt they provided was too long, and the t-nut did not have space to lock into place. I did have some bolts that were the correct size (M3x8mm) and was able to install the Y-Axis with the correct bolts. Other than the incorrect bolt size, everything else seems to be of good quality. If the right bolts were included from the get-go (and based on other reviews, it probably is for most orders), this is a 5-star product.